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Computing FFT Twiddle Factors [Matlab]
This text, figures, and code snippet are also available in downloadable PDF format Typical applications of an N-point radix-2 FFT accept N x(n) input time samples and compute N X(m) frequency-domai...
posted by Rick Lyons on Nov 28 2011
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Basic Kalman filter [Scilab]
This is the most basic implementation of a Kalman filter. For measured position, velocity and acceleration, the Kalman filter estimates the true datas. This example works with Scilab.... posted by Sylvain B on Jan 20 2011
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Spectrum analyzer [Matlab]
Determines the power spectrum, similar to a hardware measurement instrument The function takes an input signal and gives the two-sided power spectrum. Results are similar to what is obtained using a ... posted by Markus Nentwig on Dec 10 2011
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Shelving Filter Design [Matlab]
This function will generate the coefficients for a single IIR biquad that is a "shelving" design. Wierldy enough, this filter type is not part of the standard Matlab filter design toolbox. ... posted by sparafucile17 on May 29 2011
Comments (1) |
Flanger Audio Effect [C]
This is an implementation of the flanger effect using my previous entry that is a fractional delay line, as a building block. Basically the flanger effect is achieved by making the delay vary in ti... posted by Gabriel Rivas on Apr 22 2011
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Fractional Delay Line implementation [C]
This is a working implementation of a fractional delay line in C. It has been tested in the dsPIC audio kit, and in a PC running GNU/Linux operating system using the Open Sound System audio driver, b... posted by Gabriel Rivas on Jan 27 2011
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Speech Noise cancellation - scilab code [Scilab]
This program is used to perform speech noise cancellation using LMS adaptive filter in scilab... posted by Senthilkumar R on Dec 28 2011
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Fitting Filters to Measured Amplitude Response Data Using invfreqz in Matlab [Matlab]
In the 1980s I wrote the matlab function invfreqz that implements a fast (FFT-based) equation-error method for recursive filter design given samples of the desired frequency response. This method des... posted by Julius Orion Smith III on Nov 8 2010
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Discrete Haar Wavelet Transform [Matlab]
See article at http://www.dsprelated.com/showabstract/3639.php for the theory.... posted by Duraisamy Sundararajan on Jan 5 2012
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GSM (GMSK) power spectrum equation [Matlab]
A simple, empirical model for the power spectrum shape of a GMSK-modulated GSM signal, generated according to 3GPP TS 45.004 section 2 on a signal stream without slot structure. The picture shows t... posted by Markus Nentwig on Sep 18 2011
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